JPS6045984A - Optical recording/reproducing device - Google Patents

Optical recording/reproducing device

Info

Publication number
JPS6045984A
JPS6045984A JP58152921A JP15292183A JPS6045984A JP S6045984 A JPS6045984 A JP S6045984A JP 58152921 A JP58152921 A JP 58152921A JP 15292183 A JP15292183 A JP 15292183A JP S6045984 A JPS6045984 A JP S6045984A
Authority
JP
Japan
Prior art keywords
track jump
signal
linear motor
optical
hold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP58152921A
Other languages
Japanese (ja)
Other versions
JPH0587907B2 (en
Inventor
Shuichi Kimura
修一 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP58152921A priority Critical patent/JPS6045984A/en
Priority to AU31923/84A priority patent/AU573244B2/en
Priority to CA000461223A priority patent/CA1227869A/en
Priority to DE8484305658T priority patent/DE3469624D1/en
Priority to KR1019840005010A priority patent/KR920005794B1/en
Priority to EP84305658A priority patent/EP0136051B1/en
Priority to AT84305658T priority patent/ATE32799T1/en
Priority to US06/642,950 priority patent/US4698796A/en
Publication of JPS6045984A publication Critical patent/JPS6045984A/en
Publication of JPH0587907B2 publication Critical patent/JPH0587907B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/34—Guiding record carriers during transducing operation, e.g. for track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Moving Of Heads (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Lens Barrels (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Automatic Disk Changers (AREA)

Abstract

PURPOSE:To attain a stable track jump operation by superposing a DC componet in a tracking error signal to the track jump feeding signal of a linear moto for an optical system pickup. CONSTITUTION:A DC component in a tracking error signal ST just preceding to the execution of track jump is extracted by LPFs 1, 4 and held in a holding circuit 5. A signal SJ impressed by the track jump signal and superposed by the DC component from the circuit 5 through a switch S3 to be closed by a delay circuit 6 opening/closing switches S1, S2 on the basis of the track jump signal SJ is used as a jump feeding signal to execute the track jump by the optical pickup linear motor. Even if a pickup block is inclinded in the feeding direction, the stable track jump operation is attained.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、リニアモータを用いた送υｔｉ栴によりて光
学系ピックアップブロックを送る光記録／再生装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an optical recording/reproducing device that sends an optical pickup block by a feeder using a linear motor.

背景技術とその問題点 例えは光再生装置である光コンパクトディスクプレーヤ
において、コンパクトディスク自体の偏心、チャッキン
グでの偏心またはディスクテーブル自体の偏心等に対し
て、送り機構によっても追随させようとする前記リニア
モータを用いた送シ機構では、連続するサーボをがける
ために通常できるだけ非線形の部分をなくそうと設計か
なされている。すなわち、送り機′！ｆＩｉＶ′ｃおけ
る送シ軸による損失を可能な限シ減らすように、すべり
易くして摩擦による非線形の部分かなくなるように股ハ
Ｊがなされている。Background Art and Its Problems For example, in an optical compact disc player, which is an optical reproducing device, it is attempted to make the feeding mechanism follow the eccentricity of the compact disc itself, eccentricity during chucking, eccentricity of the disc table itself, etc. The feed mechanism using the linear motor is usually designed to eliminate non-linear parts as much as possible in order to provide continuous servo control. In other words, the feeder′! In order to reduce the loss due to the feed shaft in fIiV'c as much as possible, the crotch is designed to make it easy to slip and eliminate nonlinear parts due to friction.

したがって、すベク易いことから送り機構つまり送夛軸
に光学系ピックアップブロックの送シ方向となるコンパ
クトディスクの径方向に′傾きがあると、第１図に示さ
れる如くに光学系ヒツクアツプブロック（Ａｌの自重Ｗ
に傾き角度θの正弦を乗じた力Ｗ　ｘ　ｓｉｎθ　によ
って、光学系ピックアップブロック（Ａｌはすベル落ち
ようとする。Therefore, if the feeding mechanism, that is, the feeding axis has an inclination in the radial direction of the compact disk, which is the feeding direction of the optical system pickup block, the optical system pickup block ( Self-weight of Al W
The optical system pickup block (Al) tends to fall due to the force W x sin θ multiplied by the sine of the inclination angle θ.

このために、リニアモータを用いた送シｓ桐によシ光学
系ピックアップブロックを送ることで、あるいは送るこ
と等でトラックジャンプをさせるに、トラックジャンプ
の動作か不安定になるという問題点がある。For this reason, there is a problem in that the track jump operation becomes unstable when a linear motor is used to send the optical system pickup block to the paulownia, or when the track jump is performed by feeding the optical system pickup block. .

というの性、トラックジャンプは、前記の如き力ＷＸｓ
ｉｎ＃　が零であるとして光学系ピックアップブロック
を送るために、リニアモータで発生される力ｆの見かけ
の効果は、 ｆ−Ｅ−ＷＸｓｉＩｌθ となってしまう。そして、これ忙より、所定のトラック
数をジャンフ′できなかったシあるいは所定のトラック
数以上ジャンプするようになるからでろる。By the way, the track jump requires the same force WXs as mentioned above.
In order to send the optical pickup block assuming that in# is zero, the apparent effect of the force f generated by the linear motor becomes f-E-WXsiIlθ. This may be due to the fact that the predetermined number of tracks cannot be jumped due to busy conditions, or the predetermined number of tracks is jumped.

発明の目的 本発明は、このような央悄に鑑みて発明されたものであ
って、七の目的とするところは、送り機構し日光学系ピ
ックアップブロックを送る仁とテ、メるい社送ること等
でトラックジャンプ’ｋｌせるに、送り機構において光
学系ピックアップブロックの送シ方向に傾きかある場合
でも、安定したトラックジャンプの動作ができる光記録
／再生装置を提供することにある。Purpose of the Invention The present invention was invented in view of the above concerns, and the seventh purpose is to provide a mechanism for transporting Nikon optical system pickup blocks by Jin, Te, and Merui. The purpose of the present invention is to provide an optical recording/reproducing device capable of performing a stable track jump operation even when there is an inclination in the transport direction of an optical pickup block in a transport mechanism.

発明の概要 本発明にかかる光記録／再生装置扛、冒頭に記したもの
において。SUMMARY OF THE INVENTION An optical recording/reproducing device according to the present invention, as described at the beginning.

（ａ）％　トラッキングエラ−４ｉ号中の直流分を抽出
する抽出手段と、 （ｂ）、この抽出手段でのトラックジャンプ直前の抽出
値をホールドするホールド手段と、（Ｃ）、このホール
ド手段によるホールド値’ｃ　ｎｌＪ　Ｎじリニアモー
タのトラックジャンプ送シ信号に重畳させる重畳手段 とを有し％＠韻ホールド値か重畳されるｆｉｉｌ　Ｎ＋
ｊ　トラックジャンプ送り信号によフトラックジャンフ
′を行なわせるようにするリニアモータ連動回路を備え
ることを特徴とするものである。(a) Extraction means for extracting the DC component in % tracking error No. 4i; (b) Hold means for holding the extracted value immediately before the track jump by this extraction means; (C) By this hold means. The hold value 'cnlJ N+ has a superimposing means for superimposing it on the track jump transmission signal of the linear motor, and the %@rhyme hold value is superimposed on the file N+.
j) The present invention is characterized in that it includes a linear motor interlocking circuit that causes a track jump to be performed in response to a track jump feed signal.

これによ〕１送り機構によし光学系ピックアップブロッ
クを送ることで、あるいは送ること等でトラックジャン
プをさせる罠、送υ機構において光学系ビツクアツフ゛
ブロックの送シ方向に傾！！かめる場合でも、傾きによ
る光学系ピックアップブロックのすベル落ちようとする
力は打ち消されて、水平とみなされる状態にてトラック
ジャンプが行なわれるために、安定したトラックジャン
プの動作かできる。This allows the optical system pickup block to be sent to the feed mechanism, or by being fed, to cause a track jump, and the feed mechanism to tilt the optical system pickup block in the feed direction! ! Even when the optical system pick-up block is tilted, the force that causes the optical system pickup block to fall down is canceled out, and the track jump is performed in a state that is considered to be horizontal, so that a stable track jump operation is possible.

実施例 次に、本発明にかかる光記録／再生装置を光コンパクト
ディスクプレーヤに適用した場合の具体的一実施例につ
き、図面を診照しつつ説明する〇第２図は、リニアモー
タを駆動制御するりニアモータ駆動回路のブロック回路
図である。Embodiment Next, a specific embodiment in which the optical recording/reproducing apparatus according to the present invention is applied to an optical compact disc player will be explained with reference to the drawings. 〇Figure 2 shows the drive control of the linear motor. FIG. 3 is a block circuit diagram of a linear motor drive circuit.

なお、図示されないか、光学系ピックアップブロックは
りニアモータを用いた送り軸８−有する送フ磯楕によっ
て、送り方向となる円盤のコンノくクトディスクの径方
向に送られるように構成されている。まｆｃ、コンパク
トディスクの４ｇ号面には。Note that, although not shown, the optical system pickup block is configured to be sent in the radial direction of the connoct disc of the disk, which is the feeding direction, by a feeding shaft 8 using a near motor. Mafc, on the 4g side of the compact disc.

同心状にあるいは螺線状にトラックが形成されている。Tracks are formed concentrically or spirally.

まず、再生時中、および再生時からトラックジャンプ直
前までは、第１のスイッチ８１ｔｉ閉じられ、第２およ
び第５のスイッチｓ２ｓ　ｓ、は開いている。First, during playback and from playback to immediately before a track jump, the first switch 81ti is closed, and the second and fifth switches s2s, s, are open.

なお、これらのスイッチ８１〜８３の開閉は、後述する
如くにトラックジャンプ送シイハ号ｓ１にもとづい。The opening/closing of these switches 81 to 83 is based on the track jump signal s1, as will be described later.

て制御されている◇　− しかして、トラッキングエラー惜号ＳＴ中の８Ｈｚ部（
２（を通じてドライブ回路部（３）に与えられる。そし
て、このドライブ回路部（３）で増ｔｊＪ等されて、リ
ニアモーターに与えられる。◇ - However, the 8Hz section of the tracking error ST (
2 (through) to the drive circuit section (3).Then, this drive circuit section (3) increases tjJ, etc., and supplies it to the linear motor.

これによって、送り機構に連続するザーボかがけられ、
コンパクトディスク自体の偏心、チャッキングでの偏心
またはディスクテーブル自体での偏心に対して、送り機
構によっても追随されている。As a result, a continuous servo is applied to the feed mechanism,
Eccentricity of the compact disc itself, eccentricity during chucking, or eccentricity of the disc table itself is also tracked by the feeding mechanism.

なお、前記トラッキングエラー信号ｓ１・中のＢ　Ｈｚ
程度以下の周波数成分の一部は、　ｉｉ流分通スυろ波
回路部（４）に与えられ、トラッキングエラー信号ＳＴ
中の＠流分が抽出される。Note that B Hz in the tracking error signal s1
A part of the frequency components below the level of
The @stream inside is extracted.

次ＶＣ，トラックジャンプをさせてアクセス動作をさせ
るに際しては、トラックジャンプ命令（アクセス命令）
にもとづきトラックジャンプ送り信号Ｓ、が形成される
。このトラックジャンプ送り信号８Ｊはホールド回路部
（５）に与えられる。これ罠より、前記直流分通過ろ波
回路部（４）で抽出−された直流分におけるトラックジ
ャンプ送り信号ＳＪの前縁時点での抽出値が、ホールド
回路部（５）にホールドされる。Next, when performing an access operation by performing a track jump on the next VC, use a track jump command (access command).
Based on this, a track jump sending signal S is generated. This track jump sending signal 8J is given to the hold circuit section (5). As a result, the extracted value at the leading edge of the track jump feed signal SJ in the DC component extracted by the DC component pass filter circuit section (4) is held in the hold circuit section (5).

一方、トラックジャンプ送り信号ＳＪの一部は遅延回路
部１６１１ｃ与えられて遅延され、その遅延後のトラッ
クジャンプ送り信号ｓＪが第１乃至第６のスイッチ８１
〜８３夫々に与えられる。そして、これによシ、第１の
スイッチＳ１は開くように、また第２および第６のスイ
ッチ８２　ｓ　ｓｓは閉じるように駆動１１ｉ１１１１
１させられる。なお、第１のスイッチ８１か開くことに
より、送り機構における前記連続するサーボは切られる
。On the other hand, a part of the track jump sending signal SJ is given to the delay circuit section 1611c and delayed, and the delayed track jump sending signal sJ is sent to the first to sixth switches 81.
~83 each. Accordingly, the drive 11i1111 opens the first switch S1 and closes the second and sixth switches 82sss.
1. Note that by opening the first switch 81, the continuous servo in the feed mechanism is turned off.

を几、遅延されたトランクジャンプ送シ信号Ｓ。几, the delayed trunk jump transmission signal S.

と、ホールド回路部（５）にホールドされたトラッキン
グエラー信号ｓＴの前記抽出値となるホールド値とが加
算回路部（２）に与えられ、トラッキングエラー信号ｓ
Ｔとホールド値とが加算され重信、される。and the hold value which is the extracted value of the tracking error signal sT held in the hold circuit section (5) are given to the adder circuit section (2), and the tracking error signal sT is
T and the hold value are added and confirmed.

この重畳される信号は、前記ドライブ回路部（３）で増
巾等され、リニアモータＭに与えられてトラックジャン
プが行なわれる。This superimposed signal is amplified in the drive circuit section (3), and is applied to the linear motor M to perform track jumping.

したがって、前ｉｄホールド回路部（５）にホールドさ
れるのは、トラックジャンプ直前でのトラッキングエラ
ー信号ｓＴ中の直流分の抽出値ということになる。Therefore, what is held in the front ID hold circuit section (5) is the extracted value of the DC component of the tracking error signal sT immediately before the track jump.

然るに、トラッキングエラー信号ｓＴ中の直流分は、送
り機構がコンパクトディスクの径方向に傾いて光学系ピ
ックアップブロックがすべυ落ち、ジャストトラッキン
グ状態よルその径方向に光学系ピックアップブロックが
ずれていることによるものである。すなわち、光学系ビ
ツクア′ツフ゛ブロックか傾きによりその自重によって
すべ夛落ちようとする力に相応しているものでるる。However, the DC component in the tracking error signal sT indicates that the feeding mechanism is tilted in the radial direction of the compact disc, causing the optical system pickup block to slip down, and the optical system pickup block to be displaced in the radial direction due to the just tracking state. This is due to In other words, it corresponds to the force that tends to fall due to its own weight due to the inclination of the optical system's buffer block.

したかって、この直流分りｔｎホールド値を前記の如く
トラックジャンプ送）信号ＳＪに重畳させることで、光
学系ピックアップブロックのすペシ落ちようとする力は
打ち消されることになる。そして、送フ機構が水平とみ
なされる状態においてトラックジャンプが行なわれるこ
とによって、安定したトラックジャンプの動作かできる
。Therefore, by superimposing this DC component tn hold value on the track jump sending signal SJ as described above, the force that tends to cause the optical system pickup block to fall is canceled out. Since the track jump is performed in a state in which the feed mechanism is considered to be horizontal, a stable track jump operation can be performed.

なお１本実施例によれは、再生とトラックジャンプとを
交互に繰返されるような場合には、トラックジャンプ毎
にｔ＋たにホールドされた直流分の抽出値にもとづきト
ラックジャンプか入行なわれるようになり、常に正確な
トラックジャンプの動作かできる。According to this embodiment, when playback and track jump are repeated alternately, the track jump is performed based on the extracted value of the DC component held at t+ every time the track jump is performed. This allows you to perform accurate track jump movements at all times.

また、トラックジャンプは、送り機構のみではなく、送
り機構と対物レンズの例えは２軸駆動部との共同で行な
ってもよい。Further, the track jump may be performed not only by the feed mechanism, but also by the feed mechanism and the objective lens together with a two-axis drive section.

本実施例では、光コンパクトディスクプレーヤに適用し
た場合について説明したか、光記録装置では信号面に形
成された記録のための案内溝（ｐｒｅ　−ｇｒｏｏｖｅ
　）によるトラッキングエラー信号にもとづくことにな
る。In this embodiment, the case where the application is applied to an optical compact disc player has been explained. In an optical recording device, a guide groove (pre-groove) for recording formed on a signal surface is used.
) is based on the tracking error signal.

発明の効果 本発明は、次のような利点を有するものである〇送りａ
構により光学系ピックアップブロックを送ることで、あ
るいは送ること等でトランクジャンプをさせるに、送、
ａｆＩＡＩＨにおいＣ光字系ピンク。Effects of the invention The present invention has the following advantages.
By sending the optical pickup block depending on the structure, or by sending the trunk jump, sending,
afIAIH scent C light pink.

アップブロックの送り方向に傾きがある場合でも、傾き
による光学系ピックアップブロックのテへり落ちようと
する力に相応するトラッキングエラー信号中の直流分つ
まクホールド値かトラックジャンプ送シ信号にＭ畳され
ることによって、光学系ピックアップブロックのすべｂ
ｍちょうとする刀は打ち消されることになる。したがっ
て、送シ機構か水平とみなされる状態において１・２ツ
クジヤンプか行なわれ、′Ｆ３ｉ定のトラック数のジャ
ンプをすることができて、安定したトラックジャンプの
動作かできる。Even if there is an inclination in the feed direction of the up block, the DC component in the tracking error signal corresponding to the force that causes the optical system pickup block to fall off the edge due to the inclination is multiplied by M into the hold value or the track jump feed signal. By doing so, all parts of the optical system pickup block can be
A sword that attempts to attack will be canceled. Therefore, a 1.2 track jump is performed in a state in which the feed mechanism is considered to be horizontal, and a jump of a constant number of tracks 'F3i can be performed, resulting in a stable track jump operation.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の背景技術？！ｌ−説明するためのベク
トル図で１Ｌ第２図は本発明にががる光韻録／再生装置
を光コンパクトディスクプレーヤに適用した場合の具体
的一実施例におけるリニアモータ駆動回路のブロック回
路図である０ なお図面に用いられている符号において、＋２１・・・
・・・・・・・・・加算回路部＋４１・・・・・・・・
・・・・直流分通過ろ波回路部（５）・・・・・・・・
・・・・ホールド回路部−・・・・・・・・・・・・リ
ニアモータでらる。 代理人　上屋　勝 〃　常　包　芳　男 〃　杉浦俊貴Is Figure 1 the background art of the present invention? ! Figure 2 is a block circuit diagram of a linear motor drive circuit in a specific embodiment when the optical recorder/player according to the present invention is applied to an optical compact disc player. 0 In addition, in the symbols used in the drawings, +21...
・・・・・・Addition circuit section +41・・・・・・・・・
...DC pass filter circuit section (5)...
...Hold circuit section - ......Linear motor. Agent Masaru Ueya Yoshio Tsune Toshiki Sugiura

Claims (1)

【特許請求の範囲】 リニアモータを用いた送少機構によって光学系ピックア
ップブロックを送る光記録／再生装置において、 （ａｌ、）ラッキングエラー信号中の直流分を抽出する
抽出手段と、 （ｂ）、この抽出手段でのトラックジャンプ直前の抽出
値をホールドするホールド手段と。 （Ｃ）、このホールド手段によるホールド値を前記リニ
アモータのトラックジャンプ送ル信号ＶｃＸ畳させる重
畳手段 と含有し、前記ホールド値か重畳される前記トラックジ
ャンプ送り信号によルトラックジャンプを行なわせるよ
うにするｌＪ＝アモータ駆動回路を備えることを特徴と
する光記録／再生装置。[Claims] In an optical recording/reproducing device that sends an optical pickup block by a feeding mechanism using a linear motor, (al,) extraction means for extracting a DC component from a racking error signal; (b); and a hold means for holding the extracted value immediately before the track jump by the extracting means. (C) superimposing means for superimposing the hold value by the hold means with the track jump feed signal VcX of the linear motor, so that the track jump is caused by the track jump feed signal superimposed on the hold value; An optical recording/reproducing device characterized by comprising an amotor drive circuit.
JP58152921A 1983-08-22 1983-08-22 Optical recording/reproducing device Granted JPS6045984A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP58152921A JPS6045984A (en) 1983-08-22 1983-08-22 Optical recording/reproducing device
AU31923/84A AU573244B2 (en) 1983-08-22 1984-08-15 Optical disk head tracking apparatus
CA000461223A CA1227869A (en) 1983-08-22 1984-08-17 Track jump control circuit for disk apparatus
DE8484305658T DE3469624D1 (en) 1983-08-22 1984-08-20 Disc recording and/or reproducing apparatus
KR1019840005010A KR920005794B1 (en) 1983-08-22 1984-08-20 Disk recording and/or reproducing apparatus
EP84305658A EP0136051B1 (en) 1983-08-22 1984-08-20 Disc recording and/or reproducing apparatus
AT84305658T ATE32799T1 (en) 1983-08-22 1984-08-20 DISC RECORDING AND/OR PLAYBACK DEVICE.
US06/642,950 US4698796A (en) 1983-08-22 1984-08-21 Disk recording and/or reproducing apparatus with compensation for extraneous force during track jump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58152921A JPS6045984A (en) 1983-08-22 1983-08-22 Optical recording/reproducing device

Publications (2)

Publication Number Publication Date
JPS6045984A true JPS6045984A (en) 1985-03-12
JPH0587907B2 JPH0587907B2 (en) 1993-12-20

Family

ID=15551057

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58152921A Granted JPS6045984A (en) 1983-08-22 1983-08-22 Optical recording/reproducing device

Country Status (8)

Country Link
US (1) US4698796A (en)
EP (1) EP0136051B1 (en)
JP (1) JPS6045984A (en)
KR (1) KR920005794B1 (en)
AT (1) ATE32799T1 (en)
AU (1) AU573244B2 (en)
CA (1) CA1227869A (en)
DE (1) DE3469624D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0383272A (en) * 1989-08-25 1991-04-09 Hitachi Ltd Transfer controller for optical pickup

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JPS6045984A (en) * 1983-08-22 1985-03-12 Sony Corp Optical recording/reproducing device
JPH067413B2 (en) * 1985-07-03 1994-01-26 株式会社リコー Tracking control system for optical pickup
US4955011A (en) * 1986-04-10 1990-09-04 Canon Kabushiki Kaisha Information recording/reproducing apparatus with control device for maintaining head velocity below a critical velocity
JPH0679420B2 (en) * 1986-06-06 1994-10-05 パイオニア株式会社 Tracking servo device
DE3619258A1 (en) * 1986-06-07 1987-12-10 Blaupunkt Werke Gmbh COMPACT DISC (CD) PLAYER
JPS6348149A (en) * 1986-08-12 1988-02-29 Alps Electric Co Ltd Feed device
US5003415A (en) * 1987-06-18 1991-03-26 Qume Corporation Adaptive head positioning servo-mechanism
JPS6433779A (en) * 1987-07-30 1989-02-03 Toshiba Corp Track access device
JPH01133363U (en) * 1988-03-04 1989-09-11
JPH05209263A (en) * 1992-01-13 1993-08-20 Nec Corp Manufacture of sputtered alloy film and apparatus therefor
JP2005166086A (en) * 2003-11-28 2005-06-23 Toshiba Corp Rotation correcting apparatus and optical disk apparatus
CN112462684B (en) * 2020-06-16 2021-10-01 宁波智能装备研究院有限公司 Contour tracking and bilateral synchronous cooperative control method and system for gantry platform

Citations (1)

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Publication number Priority date Publication date Assignee Title
JPS58128055A (en) * 1982-01-24 1983-07-30 Sony Corp Track jumping device for disc

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US4539664A (en) * 1978-08-25 1985-09-03 Matsushita Electric Industrial Co., Ltd. Control system for optical information signal reproduction device
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JPS6215864Y2 (en) * 1980-08-04 1987-04-22
JPS58188340A (en) * 1982-04-28 1983-11-02 Sony Corp Optical reproducer
JPS592240A (en) * 1982-06-25 1984-01-07 Pioneer Electronic Corp Tracking servo device
US4677602A (en) * 1983-04-05 1987-06-30 Pioneer Electronic Corporation Device for controlling recording track jump operations with over-run correction
JPS6045984A (en) * 1983-08-22 1985-03-12 Sony Corp Optical recording/reproducing device

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JPS58128055A (en) * 1982-01-24 1983-07-30 Sony Corp Track jumping device for disc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0383272A (en) * 1989-08-25 1991-04-09 Hitachi Ltd Transfer controller for optical pickup

Also Published As

Publication number Publication date
US4698796A (en) 1987-10-06
JPH0587907B2 (en) 1993-12-20
ATE32799T1 (en) 1988-03-15
EP0136051A1 (en) 1985-04-03
KR920005794B1 (en) 1992-07-18
EP0136051B1 (en) 1988-03-02
CA1227869A (en) 1987-10-06
DE3469624D1 (en) 1988-04-07
AU3192384A (en) 1985-02-28
KR850002139A (en) 1985-05-06
AU573244B2 (en) 1988-06-02

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